Columbia University

Tackling an Ice Age mystery

In the northern hemisphere, ice sheets ebb and flow in 100,000-year cycles, driven by varying amounts of sunlight falling on Earth's surface as its orbit and orientation toward the sun changes. But astronomical variations ...

Sep 05, 2013
4.8 / 5 (5) 0

The dinosaurs' demise up close

Tourists flock to Italy to see Michelangelo's David and other iconic hunks of Renaissance stone, but in a trip over spring break, a group of Columbia students got to visit rocks that have shaped the world ...

Feb 07, 2014
4.8 / 5 (5) 0

The Isthmus of Panama: Out of the Deep Earth

As dates in geologic history go, the formation of the slender land bridge that joins South America and North America is a red-letter one. More than once over the past 100 million years, the two great landmasses ...

Apr 01, 2014
4.6 / 5 (5) 0

An overview of President Obama's climate proposal

The evidence of climate change is all around us – in the melting icecaps, rising global temperature, and the warming oceans. The International Energy Agency cautions that we need to reduce our consumption ...

Jun 26, 2014
3.3 / 5 (7) 0

New technique measures evaporation globally

Researchers at Columbia Engineering and Boston University have developed the first method to map evaporation globally using weather stations, which will help scientists evaluate water resource management, assess recent trends ...

Apr 11, 2013
3.7 / 5 (6) 1 | with audio podcast

Dental surgeon engineers tissue replacement

(PhysOrg.com) -- Earlier this year in a report in The Lancet, Columbia professor Jeremy Mao and his team showed that a joint could be grown with a host’s own stem cells, presenting a potential alternative for the 40 ...

Oct 15, 2010
4.2 / 5 (5) 0